Writing-machine.



Patented 00b. 3, 1911.

. I i/mmn WITNESSES:

A TTORNE Y STATES PATENT onrron.

rowan Qll! HOBOKEN, NEW JERSEY, A

B HESS, OF YORK, N.Y., 'ASSIGNOB 'IO ROYAL TYPEWRITER COMPANY,

CORPORATION OF JERSEY.

. wnrrme-nscnmn.

To whom it comma:

Be it known that I, Eowsuo B..' Hess, a

citizen of the United States of America,

. vices of a visible writing machine and 1s shown as applied to a platen against the front face of which impressions are made.

' In the accompany ,draw-ing: Figure'l is a longitudinal vertical section taken, in

the main, just outside of the right hand end at the platen, showing the platen and the paper-feed devices and the release lever lying outside the end plate, the carriage framebein'g omitted Fig. 2 is a similar a plates 3,

, inclined slots 14. On the outer face of the table.

view on a smaller scale from which some of the parts shownin Fig. 1 are omitted; Fig. 3, "a detail view showing a way in which the rear feed roll may be driven from the platen gt the same surface speed as that of the.

atter.

I 1 is the platen ofwhich 2 is, the axis hav-" ing appropriate'bearings in side plates of the carriage. The paper feed devices as shown consist of a frame comprising two one at each end, connected by a paper pan 4: and by a part 5 of the paper The front-feed roll 6 has its bearings in the front ends of'these frameplates 3 and, as usual, may he formed in sections.

which revolve in apertures or slots in the front portion of the pan 4;. To the rear of this point is the rear feed roll 7 which may also be in sections as usual. 8 is its shaft shown as having open bearings in the frame plates 3, At each end of the platen there is a coiledspring 9 attached to the end frame piece 3 in front of the rear feed roll. 7 The up er ends of these springs are connected to a justable eye bolts 10 carried in the front 'ends of lever arms 12 rocking at their rear ends about an axis 13. These lever. arms have corresponding right hand side plate of the carriage is a bell crank lever having an upright arm 15 and a horizontally disposed arm 16. The axis of the bell crafik is a rock shaft 17 t0 which'the bell crank is'fast. A pin- 18 on the inner side of the upper part ofthe bell crank lever at the right hand side of the machine pro] Specification of Letters Patent.

Application filed November 80, 19.07. Serial RlQ- 104,538.

ects through the side plate into the Patented Oct. 3, 1911.

inclined slot 14 in the lever arm 12 located shaft carries an arm corresponding with the part 15 of the crank. and having also a pin the same as 18 projecting into the inclined slot in the lever arm that supports a coiled suspending sprin at the left hand side of the machine. W on the lever arm 15 is in rearmost position, the outer ends of the corresponding lever arms 12at the respective ends of the laten'will be elevated and ,the springs 9 wi 1 hold the front and rear feed rolls in engagement with or in suitable juxtaposition to the surface of the platen. A gear -19 turning with the platen-meshes with a gear 20 on the shaft of the reed feed roll. These gears are so. proportioned that the feed rollwill be driven at the same surface speed as is the pie en and the teeth are of suchdepth as to, prevent them from passing out of enga ement when the feed strength as that when the feed rolls arein platen, the springs will not be extended but will not merely as suspending links. To lower the feed devices or to rmit them to move away from the platen, it is only'neces sary to. draw forward the lever arm 15 when the supports 10 of the u .per' ends of the suspending springs will be moved downwardly and the feed devices may fall away from the platen by gravity. Experience this purpose and that the use of any supplefrom the platen is unnecessary.

The feed devices thus far described are shown in the small detail view, Fig. 2, from which it will be observed that they are freely suspended and do not rock about any speaking, floating. The point of application of the springs to the frame carrying the feed rolls and the disposition of the weight of the parts may be, and preferably is, such that they are balanced, or substantially so, on the points of suspension, the point of the attachment of the spring being the center of gravity. It will be apparent that the feed devices or the frame or part carrying the feed rolls being unconfined, except by the supporting springs, the rolls may adapt at the right hand end of the platen. Atthe left hand end of the platen, the rock devices move away rom the platen. It is preferred that the springs 9 shall be of such normal position against the face of the has shown .that their weight is sutlicient for mentary spring tending to withdraw them fixed pivot but are, on the contrary, strictly 4 I prefer to'employ in connection with the 5 feed devices thus far described, a scale bar carriage. Thisrock shaft is embraced by a side plates of the carriage. Each arm, 32 is extended upwardly above the rockshaft to .face of the platen is mounted a square rock sleeve there'ezttends upwardly a yielding arm 24 curved at its upper part to conform to the platen and carrying margin clamp rollsj25, 25, arranged one aheadof the be adjusted laterally by'slidmgthe sleeve 23 on the square rock shaft and-for convenience in adjusting them, theyare each provided with a hand piece 26. The rock shaft being marked 33".

connected by a coiled spring 34 with the corf responding arm 31 that supports theiscale are permitted to move away from the themselves to the platen so as to secure-uniform contact or pressure of the respective rolls thereon. I

and margin clamp devices. Those shown are constructed and operate in the following manner. About in line below the front shaft 21 the ends 22 of which are cylindrical and turn in bearings in end plates of the sleeve 23. adjacent each end and from each other. The respective margin clamps may at the right hand end of theplaten carries ace. The rock shaft is held in normal position by a spring 28 applied to a from and the reaction of which tends to aroller 29 in the front end of the hori- The scale bar 30 is carried in the upper ends of arms 31 pivoted at their lower ends upon arms1i2 extending forward from a rock shaft 33 havingeits'bearings in the which it is attached, the upward extension Each such part 334 is bar, the scale bar being thus drawn against the face of the platen. At the right hand side of the machine, the part 33 is pro- Y longed forming a lever arm 35 equipped with a usual finger piece and from the rear of which extends a horizontal projection 36 a ainst which an adjustable eccentric stop ,3 on the bell crank arm 16 works. The arrangement is such that when the feed rolls platen, the roll 29 in the end of the bell crank arm 16 acts upon projection 27 on the square rock shaft'and' forces it rear- Wardly causing the shaft to turn in its bear ings and move the margin clamps away from the face of the platen. The eccentric 'fl've cents Washington, D. 0.

closed in said stop or projection 37 also bears against the lug or projecti0n,36 on the lever arm- 35 and rocks that arm rearwardly thereby causing the arms or parts 32 to lift the scale bar to the line of print.

Since the construction of the carriage and platen frame may be such as is usual ,in this class of machines, it is thought unnecessary to illustrate them. 7 j

Paper feed devices supported or sus pended by coiledor other springsuspen-n sion means and combined with means for releas ng sald suspending means soas to perm1t the feed devices to move away from the platen are shown and broadly claimed in my-application No. 404,009 filed November'27 1907, the present invention being an improvement upon the construction disapplication.

I claim:

'1. Feeddevices comprising a platen, front and rear feed rolls located below the axis of the platen, spring means for suspending the'rolls to allow them to float freely,and

paper feed release a device to which the spring suspending means are connected and which act to release the. suspending devices to permit the rolls to move away from the platen. i v

2. Paper ,feed'devices for a writing machine comprising a platen, front and rear feed rolls located below the axis of the platen, a frame in which they are carried,

spring means for suspending the frame to allow the frame to float freely, and paper feed release devices to which the spring suspending means are connected and which act to release said spring suspending means to permit the frame to move away from the platen.

3. Paper feed devices for a writing machine comprising a platen, front andrear rolls located below the axis of the platen, a frame in which they are mounted, suspending springs for the frame to allow the frame torfloat freely, said springs being connected at their lower ends to the frame and attheir upper ends to movable supports and means for lowering said supports to perm-it the frame to move away from the" platen.

are testimony ,whereof, I have hereunto subscribed my name.

I EDWARD B. #HESS.

Witnesses: J0HN M. LEE, L. F. BROWNING.

each, by addressing the Commissioner of Patents, 

